$ git clone -n https://src.fedoraproject.org/rpms/rust-enum-iterator-derive.git /var/lib/mock/f45-build-41461-782/root/chroot_tmpdir/scmroot/rust-enum-iterator-derive
Cloning into '/var/lib/mock/f45-build-41461-782/root/chroot_tmpdir/scmroot/rust-enum-iterator-derive'...
$ git fetch origin 929c1e5c2645b9746f08eb364d506b2c3debf7b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enum-iterator-derive
 * [new ref]         929c1e5c2645b9746f08eb364d506b2c3debf7b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 929c1e5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild